Bollard



April 20, 1948. I11A. c;L Ross BOLLAR'D Filed July 5, 1,944

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Patented Apr. Z0, 1948 UNITED STATES PATENT OFFICE BOLLARD Application July 3, 1944, Serial No. 543,250

1 Claim.

My invention relates to improvements in bollards.

When a ship is being warped into position or being moved from one berth at the pier to another, the hawser is sent ashore in the usual way and the bight led through fairleads to the most convenient winch drum and hauled taut. It is then invariably taken oi the winch drum and made fast to the nearest bollards. During this process the line has slackened to a greater or less degree depending on the speed of transfer from winch drum to bollard, and also the intensity of tide or wind aifecting the ship.

It is therefore, among the objects of the present invention to provide means whereby the removal of a hawser or line from a winch to a bollard becomes unnecessary, and to provide a means for both tightening and holding a line which can be conveniently placed at the side of a ship where the seaman can see the entire length of the outboard portion of the line that he is controlling. A further object is to dispose the component parts of the bollard and its controlling means, that it can be eiectively operated by a seaman without it being necessary to change from one position to another.

The invention contemplates a bollard having two horns, one of which is rotatably mounted, as will be more fully described in the following specification and shown in the accompanying drawings, in which- Fig. 1 is a longitudinal sectional view.

Fig. 2 is a sectional view taken on the line 2-2 of Figure 1.

Fig. 3 is a perspective View showing the bollard and the normal disposition of a line thereon.

In the drawings like characters of reference indicate corresponding parts in each ligure.

The numeral l indicates generally a portion of a ships deck which is supported upon deck beams 2. Supported from a wood base 3 is a bollard 4 which consists of a base 5 having an integral vertical horn 6 projecting upwardly therefrom adjacent one end and a bearing 8 is provided adjacent the opposite end of said base. A vertical shaft 9 having a suitable antifriction thrust bearing l is mounted within the bearing 8 and is fitted at its lower end with a worm gear l2. A winding drum I4 is secured to the upper end of the shaft 9 and is driven from the worm wheel l2 by means of a worm I5, a pair of bevel gears I 6 and a vertical shaft Il from any suitable source of power, not shown. The winding drum is of substantially similar diameter to that of the horn 6.

'I'he power source is controlled by means of a 2 control wheel I9 housed within a recess 2B in the upper face of the horn 6 and fitted to a shaft 2| which extends downwardly therethrough. The drum I4 and the horn 6 are so spaced as to provide easy` manipulation of a line about both.

In use in warping a ship into position, the winding drum I4 is set in motion and a line passed around it and held taut to provide the necessary hauling grip, when the desired amount of line has lbeen hauled in, a bight is taken also around lthe horn 6, the drum is then stopped by manipulating the control wheel I9. When the drum comes to rest, the line may be passed around the drum and horn in the form of a iigure eight to prevent endwise movement as shown in Figure 3.

If the line is to be eased ofi', it is taken off the horn and the drum and then passed around both in the same manner as when using the conventional bollard, and is paid out as desired.

Obviously the circumstances will indicate to the seaman the proper manipulation of the line, but in every case it will be possible cfor him to bring his ship to exactly the position he desires it to remain and to make fast without having any slack in the line, if he so desires.

What I claim as my invention is:

A bollard comprising a base, a pair of upstanding members spaced apart, one of said members being substantially cylindrical in form about a vertical axis and being non-rotatable, the second of said members being substantially in the form of a truncated cone and mounted on a vertical shaft parallel to the vertical axis of the rst named member, means adapted for connection -to a source of power for rotating the second named member, and means for controlling the rotation of said member, said means being located within the upper end of the non-rotatable member.

DONALD A. G. ROSS.

REFERENCES CITED The following references are of record in the ille of this patent;

UNITED STATES PATENTS Number Name `Date 544,260 Kelley Aug. 6, 1895 572,397 Andrews Dec. 1, 1896 700,470 Baldwin et al May 20, 1902 1,538,898' Kulman May 26, 1925 FOREIGN PATENTS Number Country Date 3,709 Great Britain 1884 

